/*
 This file is part of the BlueJ program. 
 Copyright (C) 1999-2009  Michael Kolling and John Rosenberg 
 
 This program is free software; you can redistribute it and/or 
 modify it under the terms of the GNU General Public License 
 as published by the Free Software Foundation; either version 2 
 of the License, or (at your option) any later version. 
 
 This program is distributed in the hope that it will be useful, 
 but WITHOUT ANY WARRANTY; without even the implied warranty of 
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 GNU General Public License for more details. 
 
 You should have received a copy of the GNU General Public License 
 along with this program; if not, write to the Free Software 
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA. 
 
 This file is subject to the Classpath exception as provided in the  
 LICENSE.txt file that accompanied this code.
 */
package bluej.debugger.jdi;

import javax.swing.tree.DefaultMutableTreeNode;

import com.sun.jdi.*;

/**
 * A tree node for the JDI thread tree.
 */
class JdiThreadNode extends DefaultMutableTreeNode
{
    public JdiThreadNode()
    {
    }

    public JdiThreadNode(ThreadGroupReference tgr)
    {
        setUserObject(tgr);
    }

    public JdiThreadNode(JdiThread jt)
    {
        setUserObject(jt);	
    }

    public boolean getAllowsChildren()
    {
        return (getUserObject() == null) || (getUserObject() instanceof ThreadGroupReference);
    }

    public String toString()
    {
        if (getUserObject() != null) {
            try {
                return getUserObject().toString();
            }
            catch (ObjectCollectedException oce) {
                return "collected";
            }
        }

        return "All Threads";
    }
}
